Four decades at Tattykeel, cost-cutting propagation and soil health for community gardens.

Helen Mark visits Tattykeel Garden in Omagh, where Hugh and Kathleen Ward reflect on four decades of gardening as they open their gates for the National Garden Scheme. Helen meets Ian Marshall to explore simple, cost effective propagation techniques for Hydrangeas and a range of houseplants. Near the foothills of the Sperrin Mountains, Helen catches up with Miriam Turley at An Creagán to discuss the challenges facing community garden groups across the country. And with Conor O'Kane she learns how homemade bio char can boost soil health. Colin Agnew joins Helen in studio. Email the programme at gardenerscorner@bbc.co.uk